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c. THOMAS. INTERNAL COMBUSTION ENGINE. APPLICATIONFILED 1AN.28. l9|9l Patented Aug, 19, 1919.

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CHART-IES THOMAS, OF VICTORIA., BRITISH COLUMBIA, CANADA.

INTERNAL-COMBUSTION ENGINE.

1313762. Specification of Letters Patent. Patented Aug, 19, 1919, Application med January 28, 1919. Serial No. 273,678.

To all whom it may concer/n: other vaporizing device to the manifold 1 Be it known that I, CHARLES THOMAS, a so that the gaseous mixture may be delivered subject of the King of Great Britain, resldto the manifold and from the manifold to at Victoria, in the Province of British the cylinders of the engine. l Columbia and Dominion of Canada, have Arranged across the intake pipe 2 is a 55 invented new and useful Improvements in butterfly valve 4 and connected with the in- Internal-'Combustion Engines, of which the take pipe 2 in advance of the butteriiy valve following is a specification. 4 is a'branch pipe 5 in o en communication This invention relates to improvements in with the intake pipe 2. rranged across the internal combustion engines and has parbranch pipe 5 is a butteriy valve 6 arranged 60 ticular application to means for feeding air at right angles tothe butterfly Valve 4 in the to* the engine cylinders and for cutting off intake pipe. Connecting the utterfly valves the flow of gas to said cylinders when the 4 and 6 for simultaneous movement is a. motor vehicle in which the engine is in-V shaft 7 that is provided with an arm 8 arstalled is descending a grade. ranged at right angles to the shaft and con- In carrying out the present invention it is nected with one end of the control rod 9. my purposeV to provide means whereby when The other end of the control rod 9 is cona 'motor vehicle is descending a grade, the nectedl with an operating lever that is ariow of gas in the engine cylinders may be ranged within convenient reach of the driver cut oif and the cylinders placed in comor operator of the motor vehicle. munication with the atmosphere so that air In the present instance the butterfly valves may be delivered to said cylinders in place 4 and 6 have their axes and pivot points of the usual explosive mixture, thereby cooldisposed in alinement with each other so ing the engine cylinders and at the same that both valves may be operated from the time enabling the pistons in the cylinders to shaft 7 simultaneously without the need of 75 act as brakes to check the speed of the car employing any mechanism between the shaft vehicle down the incline. 7 and the valve.

It is also my purpose to provide a means In practice, the valve 4 is normally opened of the class described which will embrace and the valve 6 normally closed, so that the A arran ement of parts set forth in and falltween the engine cylin the desired features of simplicity, efficiency gaseous mixture in the carbureter may be and durability,which may be manufactured delivered to the engine cylinders as usual, and installed at a small cost, and which will but'when the car is descending a grade, the operate efficiently and effectively under all control rod 8 is operated and it rotates the conditions. l shaft 7 so as to close the valve 4 and open the lWith the above recited objects in view and valve 6, thereby cutting oil' communication 85 others of a similar nature, the invention rebetween the .engine cylinders and the carsides in the construction, combination, and lbureters and establishing communication beers and the atmosing wlthin the scope ofthe appended claim. phere by way of the intake pipe and vIn the accompanying drawin s: advance pipe 5. When this condition pre- 90 The figure is an enlarged agmentary vails, air iiows into the cylinder to cushion side elevation with a motor vehicle internal the movement of the piston so that the encombustion engine equipped with means gine may be utilized as a brake to check the constructed in accordance with my invenspeed of the vehicle down the incline. This tion, the intake manifold being shown air also acts as a cooling agent to lower the partly in section and partly in elevation. temperature of the cylinders. Referring now to the drawing in detail, 1 I claim designates the intake manifold of the inter- The combination with the intake pipel of nal combustion engine while 2 indicates the van internal combustion engine, and a branch intake pipe leading from the carburetor or pipe communicating with the intake pipe its@ and opening into the atmosphere, of a dua stem, and a Valve plex valve includin disk on each end of tlg stem, Said disks being arranged Within said pipe and disposed in right angularrelation, whereby when one of said valves is closed the other is opened, an

eye projecting horizontally from said stem stem and simultaneously operate said valves. In testimony WhereofI affix my signature.

CHARLES THOMAS. 

